Download presentation
Presentation is loading. Please wait.
Published byMeagan Lindsey Modified over 9 years ago
1
Morgan Fagan
2
Agriculture Industrialized Uses machines Chemical Fertilizers Chemical Pesticides Focus on maximum yield Use of GMOs http://education-portal.com/academy/lesson/what-is-genetic- engineering-definition-benefits-issues.html#lesson http://education-portal.com/academy/lesson/what-is-genetic- engineering-definition-benefits-issues.html#lesson Monoculture Plantations
3
Agriculture Sustenance Increased biodiversity No pesticides No chemical additives Natural fertilizers Integrated Pest Management Beneficial insects Mums Crop Rotation
4
Agriculture Types Alley cropping Agroforestry Organic Farming
5
Agriculture 19.5% of U.S land is used for Agriculture 442 million acres Green Revolution http://education-portal.com/academy/lesson/what-is-the-green- revolution-definition-benefits-and-issues.html#lesson http://education-portal.com/academy/lesson/what-is-the-green- revolution-definition-benefits-and-issues.html#lesson
7
Forestry Ecological Services Providing wildlife habitats Carbon sinks Affecting local climate patterns Purifying air and water Reducing soil erosion as they serve as a watershed, absorbing and releasing controlled amounts of water Providing energy and nutrient cycling
8
Forestry Types Old growth forest Plantations Human impact Converting forests for commercial use Habitat fragmentation
9
Forestry Harvesting Trees Clear cutting Shelterwood Even aged cutting Uneven aged cutting Selective cutting
11
Forestry Forests cover about 1/3 of all land surface world wide 80% of all forest are closed canopies 20% are open canopy 70% of forests are located in North America, the Russian Federation, and South America The U.S is the largest area of timbering (employs 150,000 people and represents a $7 billion per year industry!) Teddy Roosevelt established the forest services in 1905
12
Rangeland http://education-portal.com/academy/lesson/rangelands-uses-and-degradation.html#lesson
13
Urban Sprawl The movement of people from rural areas to urban areas Reasons for Urbanization Access to jobs Higher standards of living Easier access to health care Mechanization of agriculture Access to education
14
Urban Sprawl Pros Uses less land Better sanitation systems High tax revenues Decrease reliance on fossil fuels
15
Urban Sprawl Cons Concentrated source of pollutants More waste Increased crime rates Higher strain on social services
16
Impacts on Soil Erosion Increased erosion leads to loss of top soil, nutrients, and heavy, toxic elements Prevented in farming by no till or low till Covered soil does not erode as quickly Sediment pollution
17
Impacts on Soil Tree Removal Increases runoff Decreases ground water Increases erosion
18
Impacts on Soil Urbanized land Loss of habitats Decreased amount of ground water Thermal pollution Chemicals from transportation
19
Impacts on Soil Desertification Due to overgrazing and over farming usable, fertile land it converted into dry, barren soil
20
Superfund Sites Sites that contain uncontrolled and/or abandoned land where hazardous waste is located State and Local governments are left to clean up the mess
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.